java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test19_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 13:23:18,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 13:23:18,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 13:23:18,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 13:23:18,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 13:23:18,721 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 13:23:18,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 13:23:18,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 13:23:18,726 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 13:23:18,726 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 13:23:18,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 13:23:18,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 13:23:18,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 13:23:18,729 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 13:23:18,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 13:23:18,732 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 13:23:18,734 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 13:23:18,736 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 13:23:18,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 13:23:18,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 13:23:18,741 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 13:23:18,741 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 13:23:18,741 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 13:23:18,742 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 13:23:18,743 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 13:23:18,744 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 13:23:18,745 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 13:23:18,745 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 13:23:18,745 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 13:23:18,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 13:23:18,746 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 13:23:18,746 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf [2018-01-24 13:23:18,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 13:23:18,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 13:23:18,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 13:23:18,757 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 13:23:18,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 13:23:18,758 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 13:23:18,758 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 13:23:18,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 13:23:18,759 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 13:23:18,759 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 13:23:18,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 13:23:18,760 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 13:23:18,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 13:23:18,760 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 13:23:18,760 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 13:23:18,760 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 13:23:18,760 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 13:23:18,761 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 13:23:18,761 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 13:23:18,761 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 13:23:18,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 13:23:18,762 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 13:23:18,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 13:23:18,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 13:23:18,762 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 13:23:18,762 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 13:23:18,763 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 13:23:18,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 13:23:18,763 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-01-24 13:23:18,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 13:23:18,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 13:23:18,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 13:23:18,764 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 13:23:18,765 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 13:23:18,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 13:23:18,813 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 13:23:18,817 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 13:23:18,818 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 13:23:18,819 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 13:23:18,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test19_false-valid-free.i [2018-01-24 13:23:19,015 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 13:23:19,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 13:23:19,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 13:23:19,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 13:23:19,026 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 13:23:19,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d434187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19, skipping insertion in model container [2018-01-24 13:23:19,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,044 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:23:19,092 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:23:19,206 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:23:19,222 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:23:19,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19 WrapperNode [2018-01-24 13:23:19,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 13:23:19,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 13:23:19,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 13:23:19,233 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 13:23:19,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... [2018-01-24 13:23:19,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 13:23:19,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 13:23:19,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 13:23:19,269 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 13:23:19,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 13:23:19,315 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 13:23:19,315 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 13:23:19,315 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure f19 [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure f19_undo [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure g19 [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_unsafe_19 [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_19 [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 13:23:19,316 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 13:23:19,317 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 13:23:19,317 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 13:23:19,317 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 13:23:19,317 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 13:23:19,317 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 13:23:19,317 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure f19 [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure f19_undo [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure g19 [2018-01-24 13:23:19,318 INFO L128 BoogieDeclarations]: Found specification of procedure probe_unsafe_19 [2018-01-24 13:23:19,319 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_19 [2018-01-24 13:23:19,319 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 13:23:19,319 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 13:23:19,319 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 13:23:19,319 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 13:23:19,584 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 13:23:19,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:23:19 BoogieIcfgContainer [2018-01-24 13:23:19,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 13:23:19,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 13:23:19,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 13:23:19,589 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 13:23:19,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 01:23:19" (1/3) ... [2018-01-24 13:23:19,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54748f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 01:23:19, skipping insertion in model container [2018-01-24 13:23:19,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:23:19" (2/3) ... [2018-01-24 13:23:19,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54748f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 01:23:19, skipping insertion in model container [2018-01-24 13:23:19,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:23:19" (3/3) ... [2018-01-24 13:23:19,592 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test19_false-valid-free.i [2018-01-24 13:23:19,598 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 13:23:19,604 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-01-24 13:23:19,640 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 13:23:19,640 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 13:23:19,640 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 13:23:19,640 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 13:23:19,640 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 13:23:19,640 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 13:23:19,640 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 13:23:19,640 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 13:23:19,641 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 13:23:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2018-01-24 13:23:19,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 13:23:19,665 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:19,666 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:19,666 INFO L371 AbstractCegarLoop]: === Iteration 1 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:19,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1664045335, now seen corresponding path program 1 times [2018-01-24 13:23:19,673 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:19,720 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:19,720 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:19,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:19,721 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:19,779 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:19,952 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:19,952 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 13:23:19,953 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:19,955 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:23:19,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:23:19,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:23:19,973 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 6 states. [2018-01-24 13:23:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:20,406 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2018-01-24 13:23:20,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 13:23:20,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-24 13:23:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:20,421 INFO L225 Difference]: With dead ends: 139 [2018-01-24 13:23:20,421 INFO L226 Difference]: Without dead ends: 133 [2018-01-24 13:23:20,424 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-24 13:23:20,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-24 13:23:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97. [2018-01-24 13:23:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-01-24 13:23:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2018-01-24 13:23:20,470 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 15 [2018-01-24 13:23:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:20,471 INFO L432 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2018-01-24 13:23:20,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:23:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2018-01-24 13:23:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 13:23:20,473 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:20,473 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:20,474 INFO L371 AbstractCegarLoop]: === Iteration 2 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:20,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1664045336, now seen corresponding path program 1 times [2018-01-24 13:23:20,474 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:20,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:20,476 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:20,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:20,477 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:20,496 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:20,615 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:20,616 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 13:23:20,616 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:20,617 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:23:20,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:23:20,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:23:20,618 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 6 states. [2018-01-24 13:23:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:20,939 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2018-01-24 13:23:20,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 13:23:20,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-24 13:23:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:20,941 INFO L225 Difference]: With dead ends: 129 [2018-01-24 13:23:20,941 INFO L226 Difference]: Without dead ends: 126 [2018-01-24 13:23:20,942 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-24 13:23:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-24 13:23:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2018-01-24 13:23:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 13:23:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2018-01-24 13:23:20,956 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 15 [2018-01-24 13:23:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:20,956 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2018-01-24 13:23:20,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:23:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2018-01-24 13:23:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 13:23:20,958 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:20,958 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:20,958 INFO L371 AbstractCegarLoop]: === Iteration 3 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:20,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1330432345, now seen corresponding path program 1 times [2018-01-24 13:23:20,958 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:20,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:20,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:20,961 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:20,961 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:20,983 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:21,086 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:21,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 13:23:21,126 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:21,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 13:23:21,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 13:23:21,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 13:23:21,126 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand 8 states. [2018-01-24 13:23:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:21,614 INFO L93 Difference]: Finished difference Result 149 states and 177 transitions. [2018-01-24 13:23:21,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 13:23:21,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-01-24 13:23:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:21,617 INFO L225 Difference]: With dead ends: 149 [2018-01-24 13:23:21,617 INFO L226 Difference]: Without dead ends: 147 [2018-01-24 13:23:21,617 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-24 13:23:21,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-24 13:23:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 106. [2018-01-24 13:23:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-01-24 13:23:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2018-01-24 13:23:21,636 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 17 [2018-01-24 13:23:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:21,636 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2018-01-24 13:23:21,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 13:23:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2018-01-24 13:23:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 13:23:21,637 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:21,637 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:21,638 INFO L371 AbstractCegarLoop]: === Iteration 4 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:21,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1330432346, now seen corresponding path program 1 times [2018-01-24 13:23:21,638 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:21,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:21,640 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:21,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:21,640 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:21,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:21,825 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:21,825 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 13:23:21,826 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:21,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 13:23:21,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 13:23:21,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-24 13:23:21,826 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand 9 states. [2018-01-24 13:23:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:22,181 INFO L93 Difference]: Finished difference Result 152 states and 182 transitions. [2018-01-24 13:23:22,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 13:23:22,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-01-24 13:23:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:22,183 INFO L225 Difference]: With dead ends: 152 [2018-01-24 13:23:22,183 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 13:23:22,183 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-01-24 13:23:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 13:23:22,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 82. [2018-01-24 13:23:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-01-24 13:23:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2018-01-24 13:23:22,196 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 17 [2018-01-24 13:23:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:22,196 INFO L432 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2018-01-24 13:23:22,196 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 13:23:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2018-01-24 13:23:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 13:23:22,198 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:22,198 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:22,198 INFO L371 AbstractCegarLoop]: === Iteration 5 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:22,198 INFO L82 PathProgramCache]: Analyzing trace with hash 522081757, now seen corresponding path program 1 times [2018-01-24 13:23:22,198 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:22,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:22,200 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:22,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:22,200 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:22,215 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 13:23:22,291 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:23:22,292 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:23:22,303 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:22,303 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:23:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:22,348 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:23:22,376 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 13:23:22,378 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:22,379 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:22,379 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 13:23:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 13:23:22,459 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:23:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 13:23:22,611 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-24 13:23:22,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6] total 13 [2018-01-24 13:23:22,612 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:22,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 13:23:22,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 13:23:22,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-01-24 13:23:22,613 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 8 states. [2018-01-24 13:23:22,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:22,992 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2018-01-24 13:23:22,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 13:23:22,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-01-24 13:23:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:22,993 INFO L225 Difference]: With dead ends: 125 [2018-01-24 13:23:22,993 INFO L226 Difference]: Without dead ends: 123 [2018-01-24 13:23:22,994 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-01-24 13:23:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-24 13:23:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 84. [2018-01-24 13:23:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-01-24 13:23:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2018-01-24 13:23:23,007 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 26 [2018-01-24 13:23:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:23,008 INFO L432 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2018-01-24 13:23:23,008 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 13:23:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2018-01-24 13:23:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 13:23:23,009 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:23,009 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:23,009 INFO L371 AbstractCegarLoop]: === Iteration 6 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash 522081758, now seen corresponding path program 1 times [2018-01-24 13:23:23,010 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:23,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:23,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,012 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:23,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 13:23:23,072 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:23:23,072 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:23:23,079 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:23,079 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:23:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:23,103 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:23:23,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-24 13:23:23,116 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-24 13:23:23,116 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,118 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,123 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-24 13:23:23,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-24 13:23:23,125 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,126 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,129 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,129 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2018-01-24 13:23:23,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-01-24 13:23:23,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-01-24 13:23:23,139 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,140 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-01-24 13:23:23,160 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-01-24 13:23:23,161 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,162 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,164 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:23,165 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2018-01-24 13:23:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:23,170 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:23:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 13:23:23,222 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-01-24 13:23:23,222 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 6 [2018-01-24 13:23:23,222 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:23,222 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:23:23,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:23:23,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:23:23,223 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 6 states. [2018-01-24 13:23:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:23,267 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2018-01-24 13:23:23,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 13:23:23,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 13:23:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:23,269 INFO L225 Difference]: With dead ends: 161 [2018-01-24 13:23:23,269 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 13:23:23,270 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-24 13:23:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 13:23:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-01-24 13:23:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-24 13:23:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2018-01-24 13:23:23,283 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 26 [2018-01-24 13:23:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:23,284 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2018-01-24 13:23:23,284 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:23:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2018-01-24 13:23:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 13:23:23,285 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:23,285 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:23,285 INFO L371 AbstractCegarLoop]: === Iteration 7 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:23,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1860386785, now seen corresponding path program 1 times [2018-01-24 13:23:23,285 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:23,286 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,286 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:23,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,287 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:23,298 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:23,368 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:23,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 13:23:23,368 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:23,368 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 13:23:23,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 13:23:23,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 13:23:23,369 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 8 states. [2018-01-24 13:23:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:23,469 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2018-01-24 13:23:23,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 13:23:23,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-01-24 13:23:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:23,470 INFO L225 Difference]: With dead ends: 102 [2018-01-24 13:23:23,470 INFO L226 Difference]: Without dead ends: 101 [2018-01-24 13:23:23,471 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-24 13:23:23,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-24 13:23:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2018-01-24 13:23:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-24 13:23:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2018-01-24 13:23:23,483 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 26 [2018-01-24 13:23:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:23,483 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2018-01-24 13:23:23,483 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 13:23:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2018-01-24 13:23:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 13:23:23,484 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:23,485 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:23,485 INFO L371 AbstractCegarLoop]: === Iteration 8 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:23,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1860386784, now seen corresponding path program 1 times [2018-01-24 13:23:23,485 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:23,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,486 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:23,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,487 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:23,498 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:23,584 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:23,584 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 13:23:23,584 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:23,585 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 13:23:23,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 13:23:23,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 13:23:23,585 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand 6 states. [2018-01-24 13:23:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:23,661 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2018-01-24 13:23:23,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 13:23:23,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 13:23:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:23,663 INFO L225 Difference]: With dead ends: 124 [2018-01-24 13:23:23,663 INFO L226 Difference]: Without dead ends: 97 [2018-01-24 13:23:23,664 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 13:23:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-24 13:23:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2018-01-24 13:23:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-24 13:23:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2018-01-24 13:23:23,677 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 26 [2018-01-24 13:23:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:23,678 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2018-01-24 13:23:23,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 13:23:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2018-01-24 13:23:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 13:23:23,679 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:23,679 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:23,679 INFO L371 AbstractCegarLoop]: === Iteration 9 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:23,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1338867620, now seen corresponding path program 1 times [2018-01-24 13:23:23,680 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:23,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,681 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:23,681 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:23,681 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:23,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:23,800 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:23,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 13:23:23,800 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:23,800 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 13:23:23,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 13:23:23,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-01-24 13:23:23,801 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2018-01-24 13:23:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:24,093 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2018-01-24 13:23:24,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 13:23:24,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-24 13:23:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:24,097 INFO L225 Difference]: With dead ends: 114 [2018-01-24 13:23:24,097 INFO L226 Difference]: Without dead ends: 112 [2018-01-24 13:23:24,097 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-01-24 13:23:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-01-24 13:23:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2018-01-24 13:23:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-01-24 13:23:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2018-01-24 13:23:24,112 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 28 [2018-01-24 13:23:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:24,113 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2018-01-24 13:23:24,113 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 13:23:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2018-01-24 13:23:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 13:23:24,114 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:24,115 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:24,115 INFO L371 AbstractCegarLoop]: === Iteration 10 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1748755101, now seen corresponding path program 1 times [2018-01-24 13:23:24,115 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:24,116 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:24,116 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:24,116 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:24,117 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:24,130 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:24,236 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:24,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 13:23:24,236 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:24,237 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 13:23:24,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 13:23:24,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 13:23:24,237 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 8 states. [2018-01-24 13:23:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:24,503 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2018-01-24 13:23:24,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 13:23:24,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2018-01-24 13:23:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:24,504 INFO L225 Difference]: With dead ends: 118 [2018-01-24 13:23:24,504 INFO L226 Difference]: Without dead ends: 117 [2018-01-24 13:23:24,504 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-01-24 13:23:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-24 13:23:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2018-01-24 13:23:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-24 13:23:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2018-01-24 13:23:24,516 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 30 [2018-01-24 13:23:24,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:24,516 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2018-01-24 13:23:24,517 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 13:23:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2018-01-24 13:23:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 13:23:24,517 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:24,518 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:24,518 INFO L371 AbstractCegarLoop]: === Iteration 11 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:24,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1748755102, now seen corresponding path program 1 times [2018-01-24 13:23:24,518 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:24,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:24,519 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:24,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:24,520 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:24,533 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:24,747 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:24,747 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 13:23:24,747 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:24,747 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 13:23:24,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 13:23:24,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-01-24 13:23:24,748 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 12 states. [2018-01-24 13:23:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:25,267 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2018-01-24 13:23:25,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 13:23:25,268 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2018-01-24 13:23:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:25,269 INFO L225 Difference]: With dead ends: 126 [2018-01-24 13:23:25,269 INFO L226 Difference]: Without dead ends: 124 [2018-01-24 13:23:25,270 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2018-01-24 13:23:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-24 13:23:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 89. [2018-01-24 13:23:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-24 13:23:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2018-01-24 13:23:25,285 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 30 [2018-01-24 13:23:25,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:25,285 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2018-01-24 13:23:25,285 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 13:23:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2018-01-24 13:23:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 13:23:25,286 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:25,286 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:25,286 INFO L371 AbstractCegarLoop]: === Iteration 12 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:25,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1057519410, now seen corresponding path program 1 times [2018-01-24 13:23:25,287 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:25,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,288 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:25,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,289 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:25,297 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:25,335 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:25,335 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 13:23:25,335 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:25,336 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 13:23:25,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 13:23:25,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 13:23:25,336 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 4 states. [2018-01-24 13:23:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:25,452 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2018-01-24 13:23:25,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:23:25,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-01-24 13:23:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:25,454 INFO L225 Difference]: With dead ends: 106 [2018-01-24 13:23:25,454 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 13:23:25,454 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:23:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 13:23:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2018-01-24 13:23:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-24 13:23:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2018-01-24 13:23:25,468 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 28 [2018-01-24 13:23:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:25,469 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2018-01-24 13:23:25,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 13:23:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2018-01-24 13:23:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 13:23:25,470 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:25,470 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:25,470 INFO L371 AbstractCegarLoop]: === Iteration 13 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:25,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1571490764, now seen corresponding path program 1 times [2018-01-24 13:23:25,471 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:25,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,472 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:25,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,472 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:25,480 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 13:23:25,568 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:25,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 13:23:25,568 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:25,569 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 13:23:25,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 13:23:25,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 13:23:25,569 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 7 states. [2018-01-24 13:23:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:25,631 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-24 13:23:25,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 13:23:25,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-24 13:23:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:25,633 INFO L225 Difference]: With dead ends: 91 [2018-01-24 13:23:25,633 INFO L226 Difference]: Without dead ends: 80 [2018-01-24 13:23:25,633 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-01-24 13:23:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-01-24 13:23:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-01-24 13:23:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-24 13:23:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2018-01-24 13:23:25,645 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 30 [2018-01-24 13:23:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:25,646 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2018-01-24 13:23:25,646 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 13:23:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2018-01-24 13:23:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 13:23:25,647 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:25,647 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:25,647 INFO L371 AbstractCegarLoop]: === Iteration 14 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1767360087, now seen corresponding path program 1 times [2018-01-24 13:23:25,648 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:25,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,649 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:25,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,649 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:25,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 13:23:25,705 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 13:23:25,705 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 13:23:25,706 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 13:23:25,706 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 13:23:25,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 13:23:25,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:23:25,706 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 5 states. [2018-01-24 13:23:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 13:23:25,725 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2018-01-24 13:23:25,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 13:23:25,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-24 13:23:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 13:23:25,726 INFO L225 Difference]: With dead ends: 129 [2018-01-24 13:23:25,726 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 13:23:25,727 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 13:23:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 13:23:25,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2018-01-24 13:23:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-01-24 13:23:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2018-01-24 13:23:25,734 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 37 [2018-01-24 13:23:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 13:23:25,734 INFO L432 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2018-01-24 13:23:25,735 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 13:23:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2018-01-24 13:23:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 13:23:25,735 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 13:23:25,735 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 13:23:25,736 INFO L371 AbstractCegarLoop]: === Iteration 15 === [disconnect_19Err0RequiresViolation, disconnect_19Err1RequiresViolation, disconnect_19Err2RequiresViolation, disconnect_19Err3RequiresViolation, probe_unsafe_19Err7RequiresViolation, probe_unsafe_19Err0RequiresViolation, probe_unsafe_19Err2RequiresViolation, probe_unsafe_19Err3RequiresViolation, probe_unsafe_19Err1RequiresViolation, probe_unsafe_19Err6RequiresViolation, probe_unsafe_19Err4RequiresViolation, probe_unsafe_19Err5RequiresViolation, f19_undoErr1RequiresViolation, f19_undoErr2RequiresViolation, f19_undoErr3RequiresViolation, f19_undoErr0RequiresViolation, mainErr0EnsuresViolation, f19Err2RequiresViolation, f19Err3RequiresViolation, f19Err0RequiresViolation, f19Err1RequiresViolation]=== [2018-01-24 13:23:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1640103528, now seen corresponding path program 1 times [2018-01-24 13:23:25,736 INFO L67 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-01-24 13:23:25,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,737 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:25,737 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 13:23:25,737 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 13:23:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:25,747 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 13:23:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 13:23:26,058 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 13:23:26,058 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 13:23:26,067 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 13:23:26,067 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 13:23:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 13:23:26,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 13:23:26,143 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-24 13:23:26,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-24 13:23:26,145 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,147 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,149 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-01-24 13:23:26,195 WARN L1029 $PredicateComparison]: unable to prove that (exists ((f19_~a.offset Int)) (= (store |c_old(#memory_$Pointer$.offset)| |c_f19_#in~a.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_f19_#in~a.base|) f19_~a.offset 0)) |c_#memory_$Pointer$.offset|)) is different from true [2018-01-24 13:23:26,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-01-24 13:23:26,220 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-01-24 13:23:26,220 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,267 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,271 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 13:23:26,271 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:17 [2018-01-24 13:23:26,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-01-24 13:23:26,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-01-24 13:23:26,294 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,295 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,296 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 13:23:26,297 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2018-01-24 13:23:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 13:23:26,299 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 13:23:26,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2018-01-24 13:23:26,419 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:223) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 13:23:26,423 INFO L168 Benchmark]: Toolchain (without parser) took 7407.14 ms. Allocated memory was 306.2 MB in the beginning and 552.1 MB in the end (delta: 245.9 MB). Free memory was 263.1 MB in the beginning and 438.5 MB in the end (delta: -175.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:26,424 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 306.2 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 13:23:26,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.46 ms. Allocated memory is still 306.2 MB. Free memory was 263.1 MB in the beginning and 250.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:26,425 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 306.2 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:26,425 INFO L168 Benchmark]: RCFGBuilder took 316.66 ms. Allocated memory is still 306.2 MB. Free memory was 248.0 MB in the beginning and 223.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:26,425 INFO L168 Benchmark]: TraceAbstraction took 6835.53 ms. Allocated memory was 306.2 MB in the beginning and 552.1 MB in the end (delta: 245.9 MB). Free memory was 223.8 MB in the beginning and 438.5 MB in the end (delta: -214.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 5.3 GB. [2018-01-24 13:23:26,427 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 306.2 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.46 ms. Allocated memory is still 306.2 MB. Free memory was 263.1 MB in the beginning and 250.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 306.2 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 316.66 ms. Allocated memory is still 306.2 MB. Free memory was 248.0 MB in the beginning and 223.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6835.53 ms. Allocated memory was 306.2 MB in the beginning and 552.1 MB in the end (delta: 245.9 MB). Free memory was 223.8 MB in the beginning and 438.5 MB in the end (delta: -214.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test19_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_RubberTaipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_13-23-26-435.csv Received shutdown request...